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    • 73. 发明授权
    • Method and apparatus for utilizing other sector interference (OSI) indication
    • 利用其他扇区干扰(OSI)指示的方法和装置
    • US08433357B2
    • 2013-04-30
    • US11968638
    • 2008-01-02
    • Alexei GorokhovAamod KhandekarMohammad J. Barron
    • Alexei GorokhovAamod KhandekarMohammad J. Barron
    • H04B7/00
    • H04W52/243H04W52/146H04W52/16H04W52/247H04W52/362H04W52/60H04W72/08
    • Techniques for mitigating interference in a wireless communication system are described. In one design, a sector may determine multiple fast other sector interference (OSI) indications for multiple subzones, with each subzone corresponding to a different portion of the system bandwidth. At least one report may be generated for the multiple OSI indications, with each report including at least one OSI indication for at least one subzone. Each report may be encoded to obtain code bits, which may then be mapped to a sequence of modulation symbols. A sequence of modulation symbols of zero values may be generated for each report with all OSI indications in the report set to zero to indicate lack of high interference in the corresponding subzones. This allows a report to be transmitted with zero power in a likely scenario. A regular OSI indication may also be determined for the system bandwidth and transmitted.
    • 描述了用于减轻无线通信系统中的干扰的技术。 在一种设计中,扇区可以确定多个子区域的多个快速其他扇区干扰(OSI)指示,其中每个子区域对应于系统带宽的不同部分。 可以为多个OSI指示生成至少一个报告,每个报告包括至少一个子区域的至少一个OSI指示。 每个报告可以被编码以获得码位,然后可以将其映射到调制符号序列。 可以为每个报告生成零值的调制符号序列,其中报告中的所有OSI指示设置为零,以指示相应子区域中没有高干扰。 这允许在可能的情况下以零功率传输报告。 也可以为系统带宽确定常规的OSI指示并发送。
    • 75. 发明申请
    • METHOD AND APPARATUS FOR ANTENNA DIVERSITY IN MULTI-INPUT MULTI-OUTPUT COMMUNICATION SYSTEMS
    • 多输入多输出通信系统中天线多样性的方法与装置
    • US20120120925A1
    • 2012-05-17
    • US13271121
    • 2011-10-11
    • Tamer KadousAamod KhandekarDhananjay Ashok GoreAlexei Gorokhov
    • Tamer KadousAamod KhandekarDhananjay Ashok GoreAlexei Gorokhov
    • H04W72/04
    • H04L5/0023H04B7/0456H04B7/061H04B7/0671H04B7/0691H04B7/0697H04L27/2602
    • Transmission schemes that can flexibly achieve the desired spatial multiplexing order, spatial diversity order, and channel estimation overhead order are described. For data transmission, the assigned subcarriers and spatial multiplexing order (M) for a receiver are determined, where M≧1. For each assigned subcarrier, M virtual antennas are selected from among V virtual antennas formed with V columns of an orthonormal matrix, where V≧M. V may be selected to achieve the desired spatial diversity order and channel estimation overhead order. Output symbols are mapped to the M virtual antennas selected for each assigned subcarrier by applying the orthonormal matrix. Pilot symbols are also mapped to the V virtual antennas. The mapped symbols are provided for transmission from T transmit antennas, where T≧V. Transmission symbols are generated for the mapped symbols, e.g, based on OFDM or SC-FDMA. Different cyclic delays may be applied for the T transmit antennas to improve diversity.
    • 描述了可以灵活地实现期望的空间复用顺序,空间分集顺序和信道估计开销顺序的传输方案。 对于数据传输,确定接收机的分配子载波和空间复用顺序(M),其中M≥1。 对于每个分配的子载波,从由正交矩阵的V列形成的V个虚拟天线中选择M个虚拟天线,其中V≥M。 可以选择V以实现期望的空间分集顺序和信道估计开销顺序。 通过应用正交矩阵将输出符号映射到为每个分配的副载波选择的M个虚拟天线。 导频符号也映射到V虚拟天线。 映射的符号被提供用于从T发射天线发射,其中T≥V。 为映射符号生成传输符号,例如基于OFDM或SC-FDMA。 可以对T发射天线应用不同的循环延迟以改善分集。